Closure cap



E. E. DRUMM CLOSURE CAP Nov. 5, 1929.

Filed Oct. 10 1927 Patented Nov. 5, 1929 UNITED STATES PATENT OFFICEELMER E. DRUMM, OF MANITOWOC, WISCONSIN, ASSIGNOR TO ALUMINUM GOODSMANUFACTURING 00., OF MANITOWOC, WISCONSIN, A CORPORATION OF NEW JER-SEY CLOSURE GAP Application filed October 10,

This invention relates to closure caps. Objects of this invention are toprovide a closure cap such for example as a cap adapted for use on thegasoline tanks of automobiles, which is so constructed that it isimpossible to have the gasoline splashed out through the vent opening inthe cap, but which still provides a continuous vent for the tank.

Further objects are to provide a novel form of tank cap which is veryeasy to construct, in which the several parts may be most easilyassembled, and which presents a very pleasing and attractive appearance.

An embodiment of the invention is shown in the accompanying drawings inwhich:

Figure 1 is a sectional view through the p;

Figure 2 is a plan view of the structure 20 shown in Figure 1.

Referring to the drawings, it will be seen that the cap comprises asubstantially inverted cup-shaped member having a transverse upperportion 1 and approximately cylindrical side portions 2. These sideportions may terminate in a beaded lower edge 3 in order to strengthenthe lower edge and also to provide a finished appearance. If desired,the outer face 2 of the portion 2 may be knurled.

The upper portion is provided with a raised annular portion 4, and thisannular portion is provided with one or more vent apertures 5. In theform shown, three have been illustrated as shown in Figure 2, althoughobviously the number of vent apertures may be varied, as desired. Onealone may be used if required. Below the top portion 1, a metal washer 6is positioned and held tightly in place against the underside of thetop 1. This washer 2 extends across the raised portion 4.- and providestherewith an annular passageway or channel 7 The washer is provided withone or more vent .1 apertures 8 which are arranged in staggered relationto the vent apertures 5, as shown in Figure 2. The washer 6 is held inplace by means of the transverse member 9 which is riveted or otherwisesecured to the top 2, 1? and which is provided with depressed por- 1927.Serial No. 225,225.

tions 10 which receive the inner marginal portion of the washer 6.Preferably, the member 9 is a flat strap-like spring member and isprovided with downwardly'and outwardly turned arms 11 adapted to engageand interlock with the throat or neck portion of the tank, such neckportion may, if desired, be provided with inwardly projecting lugs, orotherwise constructed to cooperate with the members 11 and thus lock thetank cap in place. a I

A cork, composition, or leather washer 12 is carried within the cap andis of annular contour, as shown in Figure 1. It is adapted to tightlyengage the upper or outer end of the kfilling neck of the tank and thusseal the tan r I It is to be noted also that the member 9 can befastened to the top 1 in other ways than by rivets in an obvious manner.

It will be seen that I a very simple and serviceable type of cap hasbeen provided which may be readily applied, Which will close the mouthof the tank, and which yet provides for a limited venting of the tank.

It is to be noted particularly that the liquid or gasoline within thetank cannot splash outwardly due to the peculiar construction de scribedabove. Suppose, for instance, that gasoline should by any chance passthrough one of the apertures 8 into the space 7. It will not passoutwardly through any of the apertures 5 as these apertures are out ofalignment with theapertures 8. In addition to this, the gasoline willrun back into the tank through the apertures 8 and thus no gasoline willbe lost.

It is to be noted further that the cap is of very attractive appearanceand is highly serviceable in operation.

It is obvious that the top may be formed flat and the channel may beformed in the ring-like member 6, and that other changes maybe madewithout departingfrom the spirit of this invention. Therefore, althoughthe invention has been described in considerable detail, suchdescription is intended as illustrative rather than limiting as theinvention may be variously embodied and as the scope of such inventionis to be determined as claimed.

I claim:

1. A cap comprising an integral metal 5 member having a transverse topportion and cylindrical side walls, said top portion having an annularinverted channel-shaped raised portion provided with a plurality ofapertures, a washer positioned below said channel portion and closingthe underside of said channel portion, said washer being provided with aplurality of apertures out of alignment with the first mentionedapertures.

2. A closure cap for a tank comprising a body portion having integralcylindrical side walls and having an upwardly struck channel-likeportion of annular contour on its upper side, said upstruck portionhaving apertures therethrough, a washer positioned below said upstruckportion and having apertures therethrough out of alignment with saidfirst mentioned apertures, and a transverse retaining member holdingsaid washer in place.

5' 3. A closure cap for a tank comprising a body portion having integralcylindrical side walls and having an upwardly struck channel-likeportion of annular contour on its upper side, said upstruck portionhaving aperao tures therethrough, a washer positioned be low saidupstruck portion and having apertures therethrough out of alignment withsaid first mentioned apertures, and a transverse retaining memberholding said washer in 36 place, said transverse retaining member havingoutwardly turned ends.

4:. A closure cap for a tank comprising a body portion havingcylindricalside wallsand having an annular upstruck channel-like portion formed inits body portion and provided with a vent opening, a washer positionedbeneath said channel-like portion and having an aperture out ofalignment with said first mentioned aperture, a transverse retainingmember secured to said body portion and retaining said washer in placeand having outturned lower arms, and a gasket carried within said bodyportion.

5. A closure cap including a body having an annular inverted constrictedchannelshaped raised portion formed in its top and provided with aplurality of apertures, and a removable closure plate for the open sideof the channel member having a plurality of apertures therein arrangedout of alignment with the apertures in the raised portion.

In testimony that I claim the foregoing I have hereunto set my hand atManitowoc, in the county of Manitowoc and State of Wisconsin.

ELMER E. DRUMM.

